duete; see due, ty 2 ]. syn: duty, obligation refer to something a person feels bound to do. A duty often applies to what a person performs in fulfillment of the permanent dictates of conscience, piety, right, or law: one's duty to tell the truth; a parent's duty to raise children properly.
Mutations in the RB1 gene are responsible for most cases of retinoblastoma. RB1 is a tumor suppressor gene, which means that it normally regulates cell growth and keeps cells from dividing too rapidly or in an uncontrolled way.
Torn retina and retinal detachment causes include the vitreous gel shrinking and pulling away from the retina, and fluid passing through retinal tears, lifting Torn retina and retinal detachment causes include the vitreous gel shrinking and pulling away from the retina, and fluid passing through retinal tears, lifting the retina off the back of the eye. Subspecialties